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KUROUTOSHIKOU RX 6400 Low Profile

RD-RX6400-E4GB / LP

Graphics Processor: Navi 24
Cores: 768
TMUs: 48
ROPs: 32
Memory Size: 4 GB
Memory Type: GDDR6
Bus Width: 64 bit

GPU

I/O

Bottom

Box

Graphics Processor

GPU Name: Navi 24

GPU Variant: Navi 24 XL
(215-135000046)

Architecture: RDNA 2.0

Foundry: TSMC

Process Size: 6 nm

Transistors: 5,400 million

Density: 50.5M / mm²

Die Size: 107 mm²

Graphics Card

Release Date: Jan 19th, 2022

Availability: Apr 20th, 2022

Generation: Navi II
(RX 6000)

Predecessor: Navi

Successor: Navi III

Production: Active

Bus Interface: PCIe 4.0 x4

Clock Speeds

Base Clock: 1923 MHz

Game Clock: 2039 MHz

Boost Clock: 2321 MHz

Memory Clock: 2000 MHz
16 Gbps effective

Memory

Memory Size: 4 GB

Memory Type: GDDR6

Memory Bus: 64 bit

Bandwidth: 128.0 GB/s

Render Config

Shading Units: 768

TMUs: 48

ROPs: 32

Compute Units: 12

RT Cores: 12

L0 Cache: 32 KB per WGP

L1 Cache: 128 KB per Array

L2 Cache: 1024 KB

L3 Cache: 16 MB

Theoretical Performance

Pixel Rate: 74.27 GPixel/s

Texture Rate: 111.4 GTexel/s

FP16 (half): 7.130 TFLOPS (2:1)

FP32 (float): 3.565 TFLOPS

FP64 (double): 222.8 GFLOPS (1:16)

Board Design

Slot Width: Single-slot

Length: 155 mm
6.1 inches

Width: 120 mm
4.7 inches

Height: 18 mm
0.7 inches

TDP: 53 W

Suggested PSU: 250 W

Outputs: 1x HDMI 2.1
1x DisplayPort 1.4a

Power Connectors: None

Board Number: D634

Graphics Features

DirectX: 12 Ultimate (12_2)

OpenGL: 4.6

OpenCL: 2.2

Vulkan: 1.3

Shader Model: 6.8

Navi 24 GPU Notes

Generation: Navi II
Codename: Beige Goby
Ray Tracing Cores: 1st Gen
Infinity Cache: 1st Gen
Graphics/Compute: 10.3.5
Shader ISA: GFX10.3 (gfx1034)
Display Core Next: 3.0.3
Video Core Next: 3.0.33
System DMA: 5.2.5
Platform Security Processor: 11.0.13

Per SIMD32:
- 10 KB Scalar Register File

Per CU:
- 16 KB Vector Data Cache
- 64 KB Local Data Share (GCN-Mode)

Per WGP:
- 16 KB Scalar Data Cache / K Cache
- 32 KB Instruction Cache
- 128 KB Local Data Share

Latest Drivers:
Windows 7:
64-bit: AMD Software: Adrenalin Edition 22.6.1

Windows 10 / 11:
64-bit: AMD Software: Adrenalin Edition: Latest
64-bit: AMD Software: PRO Edition 22.Q4

Other retail boards based on this design (15)

Name	GPU Clock	Boost Clock	Memory Clock	Other Changes
ASRock RX 6400 Challenger ITX	1923 MHz	2321 MHz	2000 MHz	162 mm/6.4 inches, Dual-slot
ASRock RX 6400 Low Profile	1923 MHz	2321 MHz	2000 MHz	150 mm/5.9 inches
ASUS DUAL RX 6400	1923 MHz	2321 MHz	2000 MHz	201 mm/7.9 inches, Dual-slot
ASUS PHOENIX RX 6400	1923 MHz	2321 MHz	2000 MHz	196 mm/7.7 inches, Dual-slot
BIOSTAR RX 6400	1923 MHz	2321 MHz	2000 MHz	185 mm/7.3 inches
GIGABYTE RX 6400 EAGLE	1923 MHz	2321 MHz	2000 MHz	192 mm/7.6 inches, Dual-slot
GIGABYTE RX 6400 Low Profile	1923 MHz	2321 MHz	2000 MHz	182 mm/7.2 inches, Dual-slot
KUROUTOSHIKOU RX 6400 Low Profile	1923 MHz	2321 MHz	2000 MHz	155 mm/6.1 inches
MSI RX 6400 AERO ITX	1923 MHz	2321 MHz	2000 MHz	172 mm/6.8 inches, Dual-slot
PowerColor RX 6400 ITX	1923 MHz	2321 MHz	2000 MHz	165 mm/6.5 inches, Dual-slot
PowerColor RX 6400 Low Profile	1923 MHz	2321 MHz	2000 MHz	155 mm/6.1 inches
Sapphire PULSE RX 6400	1923 MHz	2321 MHz	2000 MHz	170 mm/6.7 inches, 55 W
VASTARMOR RX 6400 EXPLORER	1923 MHz	2321 MHz	2000 MHz	155 mm/6.1 inches
XFX Speedster SWFT105 RX 6400	1923 MHz	2321 MHz	2000 MHz	155 mm/6.1 inches
Yeston RX 6400 Low Profile	1923 MHz	2321 MHz	2000 MHz	170 mm/6.7 inches, 55 W